Which version of Apache and PHP do u use. If u use Aapche 2.0.39 and PHP 4.2.1, it doesn't work. I mean apache always give error message (failed to load ....). I tried following on Windows ME, Win2K, and XP.
Apache 2.0.39, PHP 4.2.1 (NO)
Apache 2.0.36, PHP 4.2.1 (OK)
Apache 1.3.26, PHP 4.2.1 (OK)
Apache 1.3.26, PHP 4.3.0-dev (OK)
Apache 2.0.39, PHP 4.3.0-dev (OK)
It looks like PHP doesn't support Aapche 2.0.39 yet.